Allied Telesis AT-WL2411 - Manual (Page 102)

AT-WL2411 Installation and User’s Guide
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1. From the main menu, click IP Tunnels and then click Tunnel Filters.
2. Click Predefined Subtype Filters. The Predefined Subtype Filters
screen appears, as shown in Figure 41.
Figure 41 Predefined Subtype Filters
3. In each frame subtype field, click the down arrow on the right side of
the Action field and choose Pass or Drop.
4. Click Submit Changes to save your changes. To activate your changes,
click the Save/Discard Changes link in the menu bar and then click
Save Changes and Reboot. For help, see Saving Your Configuration
Changes on page 46.
Customizing Subtype Filters.
You can define output filters that restrict customized frame subtypes
that can pass through an IP tunnel. Frames can be filtered by the DIX,
802.2, or 802.3 SNAP type, the IP protocol type, or the TCP or UDP port
number. By default, the filters drop all protocol types except the NNL DIX
Ethernet type (hexadecimal 875B). Filters must be configured in all root
candidates and in any access point that can attach to the remote end of
an IP tunnel. You define the action, subtype, and value parameters in
customized filters.